4239820 has 48 divisors (see below), whose sum is σ = 10019520. Its totient is φ = 1495296.

The previous prime is 4239811. The next prime is 4239821. The reversal of 4239820 is 289324.

4239820 = T₁₁₆ + T₁₁₇ + ... + T₂₉₉.

4239820 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 4⁷ + 2⁹ + 3¹³ + 9⁶ + 8 + 2²¹ + 0 .

It is not an unprimeable number, because it can be changed into a prime (4239821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5626 + ... + 6334.

It is an arithmetic number, because the mean of its divisors is an integer number (208740).

Almost surely, 2^4239820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4239820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5009760).

4239820 is an abundant number, since it is smaller than the sum of its proper divisors (5779700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4239820 is a wasteful number, since it uses less digits than its factorization.

4239820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4239820 is about 2059.0823198697. The cubic root of 4239820 is about 161.8511562800.

The spelling of 4239820 in words is "four million, two hundred thirty-nine thousand, eight hundred twenty".